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首页> 外文会议>Optical Fibre Sensors pt.1 >Near-Infrared Fluorescent Dyes for Fiber Optic Sensing
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Near-Infrared Fluorescent Dyes for Fiber Optic Sensing

机译：用于光纤传感的近红外荧光染料

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摘要

Fiber optic sensing requires the use of molecular probes such as fluorescent dyes or indicators that can be induced during analysis to produce a detectable spectral change. Spectroscopic techniques have long been applied to the determination of analytical and bioanalytical measurements using fiber optic sensors; however, relatively few studies have been reported utilizing near-infrared (NIR) absorbing chromophores. This longer wavelength region of the electromagnetic spectrum is more advantageous because of the inherently lower background interference and the high molar absorptivities of NIR absorbing chromophores. Low background interference is especially important in samples containing a complex matrix. The design and operation of an NIR probe are similar to that of conventional UV-visible probes. In principle optical fiber or other optical sensors can be made selective to a particular analyte. The selectivity will be determined primarily by the selectivity of the sensor dye and by the nature of the matrix entrapping the dye if the probe is non-covalently attached. This presentation discusses the development of different NIR dyes for fiber optic sensor applications. Examples are given for determining basic analytical properties, e.g., pH, metal ion concentration, and solvent hydrophobicity. Similarly, NIR dyes are very useful for bioanalytical probes (immunochemistry, etc.) as well.
机译：光纤传感需要使用分子探针，例如荧光染料或指示剂，可以在分析过程中将其诱导以产生可检测的光谱变化。长期以来，光谱技术已用于使用光纤传感器确定分析和生物分析测量结果；然而，利用近红外（NIR）吸收发色团的报道很少。由于固有地较低的背景干扰和近红外吸收发色团的高摩尔吸收率，因此电磁光谱的更长的波长区域更有利。低背景干扰对于包含复杂基质的样品尤其重要。 NIR探针的设计和操作与常规的紫外线可见探针相似。原则上，可以使光纤或其他光学传感器对特定的分析物具有选择性。如果探针是非共价连接的，则选择性将主要由传感器染料的选择性和包裹染料的基质的性质决定。本演讲讨论了用于光纤传感器应用的不同NIR染料的开发。给出用于确定基本分析性质的实例，例如pH，金属离子浓度和溶剂疏水性。同样，NIR染料对于生物分析探针（免疫化学等）也非常有用。

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